. The elements of experimental embryology. Embryology, Experimental; Embryology. Fig. 189 The attraction of outgrowing nerve-fibres towards an abnormally situated limb. a, The constitution of the normal brachial plexus of an axolotl formed from spinal nerves 3-5. b, The brachial plexus of an embryo in which the limb-bud was moved five segments further back; the plexus is formed by spinal nerves 5-9. (From Mangold, Ergehn. der Biol, in, 1928. after Detwiler.) brachial plexus. But the plexus can be formed from spinal nerves 2, 3 and 4, or 5, 6 and 7 (sometimes with the co-operation of additional
. The elements of experimental embryology. Embryology, Experimental; Embryology. Fig. 189 The attraction of outgrowing nerve-fibres towards an abnormally situated limb. a, The constitution of the normal brachial plexus of an axolotl formed from spinal nerves 3-5. b, The brachial plexus of an embryo in which the limb-bud was moved five segments further back; the plexus is formed by spinal nerves 5-9. (From Mangold, Ergehn. der Biol, in, 1928. after Detwiler.) brachial plexus. But the plexus can be formed from spinal nerves 2, 3 and 4, or 5, 6 and 7 (sometimes with the co-operation of additional nerves) (fig. 189). The attraction which the limb exerts on the outgrowing nerve- fibres is shown still more clearly by experiments in which the whole of one half (the right) of the rudiment of the spinal cord of the frog is removed at the neurula stage. No nerves at all grow out from the right side towards the hind-limb, but fibres from the sciatic plexus ^ Detwiler, 1920 b, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Huxley, Julian, 1887-1975; De Beer, Gavin, Sir, 1899-1972. New York [Hafner Pub. Co. ]
Size: 1340px × 1865px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectembryology
